Station 13 - Polson Canyon

Location. Polson Canyon is located on WWSL's 1st Subdivision Mile Post xx.

WWSL 1st Subdivision

Vignette. Polson Canyon is a vignette. It is a recreation of the Milwaukee Road's

Design. I wanted to create a winding main line along the Middle Satsop River similar to the Milwaukee Roads main line thru xxxxx and yyyy, with the Olympic Peninsula terrain rather than the rugged terrain shown in the pictures below. 

The south entrance to the canyon is a wooden tunnel portal with rock shed, similar to the Northern Pacific's West Portal Tunnel #5, Homestake Pass, MT.

The main line is a series of 32 degree curves paralleling the Middle Fork of the Satsop River.
The north entrance to the canyon as it approaches the Satsop River Bridge has two abandoned spurs, originally built to service OPLC Camps 5 and 7.

Track Diagram.

 

Roadway.  Main line is WWSL main line relaxed standard.

• Bridge 1 is a 50 ' thru plate girder bridge
• Bridge 2 is a 65' thru plate girder bridge.
• Bridge 3 is a 60' timber trestle on either side of a 50' deck girder bridge.

The roadbed to Camp 5 is OPLC abandoned. The roadbed to Camp 7 is OPLC ties and dirt roadbed.

Scenery.

• Far scenery is high hillside with secondary forest growth.
• Mid scenery is near vertical basalt cliffs and dirt embankments as appropriate.
• Near scenery is river embankment with post-cutting scrub growth.

Catenary/Signaling. The main line is under wire.

Structures. 

• The south entrance to Polson Canyon will have a wooden tunnel portal with rock shed, similar to the Northern Pacific's West Portal Tunnel #5, Homestake Pass, MT.
• If possible, a slide fence will be along the verticle basalt cliff.
• The north entrance to Polson Canyon may have a MOW scene, TBD.

REFERENCES.

Joel's Southern Pacific in The Cascades, http://spcascades.railfan.net/NP.html